Yes, reserved slots should be invisible to the server browser so it will read 22/22 (and be removed from full filters) but reserved players will still be able to connect.
If you are in the UK be cautious about Enermax PSU's as they no longer have their own UK presence. (3rd party for support although they were okay when I had to use them last)
Also don't plan on going to LANs with a define case they are really …
